2" speaker enclosure

This is a 4.2" tall speaker enclosure to be used with 2" speakers one on top and one on bottom. the space in the middle should be enough to hot glue a Pam8403 5v audio amp. with 2 holes for USB power and headphone jack.
P.S the Pam8403 5v audio amp is the size of a penny and costs 34 cents
http://www.aliexpress.com/item/High-Quality-PAM8403-Audio-Module-DC-5V-Mini-Class-D-digital-amplifier-board-LCD/32470977040.html?spm=2114.01010208.3.82.OeyjsL&ws_ab_test=searchweb201556_3,searchweb201644_2_5